The present invention refers to an induction heating system.

In general , the present invention refers to heaters with continuous flow, namely wherein heat is generated only when water flows, for example with direct contact of water with the heating means through an electric energy supply.

In particular, the present invention refers to induction heating apparatuses, different from ovens, for specific applications, which use a susceptor for heating a fluid, current sources.

The prior art is given by EP-A2-2239523 dealing with a heating unit arranged inside a container or wound around a tube. The heating unit is adapted to be heated by eddy currents created by an induction coil arranged on a periphery of the container. The induction coil is supplied by electric current through a generator actuated by a wind turbine.

Moreover, the prior art is given by JP-A-2005 248822 dealing with an hydraulic turbine integrated with a generator and a pump integrated with a motor.

Moreover, the prior art is given by US-A1- 2013/0220996 dealing with a housing containing an induction heating coil arranged around an internal circumference of the housing. A plurality of substantially parallel loops of the induction heating coil are formed in assemblies with tight spiral longitudinally extending along the internal surface of the housing. Pairs of assemblies of tight coils are circumferentially arranged one over the other around the internal surface of the housing. The space between each parallel ring of the induction heating coil, the space between the assemblies of tight coils, and the number of assemblies with tight spiral can be determined for the required application depending on required heat, diameter of the induction heating serpentine. diameter of the tube or through any other method as known in the art . The housing is preferably composed of material with high relative magnetic permeability, namely laminate , to minimize the leakages, capable of conducting an electric current , such as copper, steel, aluminium, etc. Alternatively, it can be an electrically insulated material to prevent an energy dissipation in the surrounding environment, coating made of plastics, rubber, etc.

Moreover, the prior art is given by US-A1-

2017/0254465 dealing with a tubular device comprising a plug element which connects a connector and the like on a supply side.

EP-A2-2239523 deals with a tube heated through eddy currents; eddy currents of an induction coil; an induction coil supplied by electric current through a generator; a generator actuated by a wind turbine. The unsolved problems deal with the way in which the induction coil is connected to the generator and the way in which the wind turbine actuates the generator.

US-A1-2013/0220996 deals with an induction heating coil arranged around an internal circumference of a housing composed of a material with high relative magnetic permeability or of a material made of plastics, rubber, etc.

A problem to be solved is the lack of a device integrated with all peculiar features present in the prior art.

JP-A-2005 248822 deals with an hydraulic turbine integrated with a generator providing the starting point for solving the problem of how the wind turbine actuates the generator through a device integrating a generator with an operating machine .

US-A1-2017/0254465 deals with a quick connection of a connector on a supply side, providing the starting point for solving the problem of how the induction coil is connected to the generator .

US-A1-2013/0220996 deals with an induction heating coil arranged around an internal circumference of a housing, providing the starting point for making an arrangement of the coil around a section of hydraulic tube.

US-A1-2008/142510 discloses an induction heating system according to the preamble of Claim

1.

The main object of the present invention is providing an induction heating system by assembling devices with a suitable size from a table depending on the desired energy characteristics.

A further object is being able to quickly change the device sizes depending on the desired energy characteristics. Another object is making integrated apparatuses, such as: generator apparatus / turbine ; tubular casing apparatus / induction coil, tube section apparatus / tubular casing / induction coil .

The above and other objects and advantages of the invention, as will appear from the following description, are obtained with an induction heating system as claimed in Claim 1. Preferred embodiments and non-trivial variations of the present invention are the subject matter of the dependent claims.

It is intended that all enclosed claims are an integral part of the present description.

It will be immediately obvious that numerous variations and modifications (for example related to shape , sizes, arrangements and parts with equivalent functionality) can be made to what is described, without departing from the scope of the invention, as provided by the enclosed claims.

The present invention will be better described by some preferred embodiments thereof , provided as a non-limiting example, with reference to the enclosed drawings , in which:

Figure 1 shows a first operating diagram of an embodiment of an induction heating system according to the present invention;

Figure 2 shows a second operating diagram of an embodiment of an induction heating system according to the present invention;

Figure 3 shows a perspective view of a meaningful apparatus of an embodiment of an induction heating system according to the present invention;

Figure 4 shows a plan view of the previous Figure ;

Figure 5 shows a sectional view along line V-V of the previous Figure ;

Figure 6 shows a side view of Figure 3;

Figure 7 shows a sectional view along line

VII -VII of the previous Figure ;

Figure 8 shows a sectional view along line

VIII -VIII of Figure 6;

Figure 9 shows a perspective view of a meaningful component of an embodiment of an induction heating system according to the present invention; and

Figure 10 shows an enlarged portion X of the previous Figure.

With reference to Figures 1 and 2, it is possible to note that an induction heating system comprises at least one induction heating coil 1 wound along the external wall of at least one section of a hydraulic tube P crossed by a heating fluid. The induction heating coil 1 is electrically connected to a supply source 2 with a first end 11 and a second end 12.

Advantageously, with reference to Figure 5, a sleeve 3 allows creating a hollow space with the section of hydraulic tube P in which the induction heating coil 1 is housed.

The sleeve 3 is connected to an interface plaque 4 designed to house an electric connection plug to connect the first end 11 and the second end

12 to a connector of the supply source 2 , not shown .

With reference to Figures 9 and 10, a section of supporting tube 5 is equipped with a plurality of external grooves 51 and a plurality of internal grooves 52, to allow positioning the induction heating coil 1 wound along the external and internal wall of the section of supporting tube 5.

The section of supporting tube 5 is connected to the sleeve 3 through a plug 53 inserted into a hole 31, Figure 5.

The section of supporting tube 5 is equipped with a pair of drilled slots 54, 55, to pass the induction heating coil 1 next to the first end 11 and of the second end 12.

The section of supporting tube 5 is composed of a material with high relative magnetic permeability to minimize the leakages , capable of conducting an electric current, such as copper, steel, aluminium.

Alternatively, the section of supporting tube

5 is composed of electrically insulated material to prevent the energy dissipation to the surrounding environment, through a coating made of plastics, rubber.

The supply source 2 is an electric current generator integrated with a hydraulic turbine / hydro-turbine or with a wind impeller.

The supply of electric current is provided through a hydraulic turbine / hydro-turbine (of different models, such as Pelton, Francis, etc.) connected to an electric current generator which is automatically actuated when passing water through the hydraulic turbine / hydro-turbine, generating electric current to actuate an induction coil, approximately shaped as a spiral wound around at least one section of hydraulic tube where running water flows to be instantaneously heated, as occurs in a common household gas heater, the water temperature being regulated through a thermostat.

Alternatively, the induction coil is wound around a bundle of sections of hydraulic tube.

Alternatively, water is heated through resistances (not shown) or systems adapted for such purpose .

The material of the section of hydraulic tube is suitable for induction.

The hydraulic circuit allows a completely autonomous operation without any type of starting battery to trigger the operation.

This is an important difference with respect to a boiler, which, having to use a closed circuit, needs a battery for its starting.